Patents by Inventor Saburo Arai

Saburo Arai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bending apparatus for hollow double-structured pipe
    Patent number: 5937686
    Abstract: This invention is concerned with an apparatus for bending a hollow double-structured pipe for use in an exhaust pipe of an internal combustion engine, for example, and aims at providing such hollow double-structured pipe which is capable of effecting favorable bending work, even in the case of using an inner pipe of a thin wall thickness.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: August 17, 1999
    Assignees: Sankei Giken Kogyo Kabushiki Kaisya, Kabushiki Kaisya Vista
    Inventor: Saburo Arai
  • Bending device for hollow double-structured pipe
    Patent number: 5749255
    Abstract: Disclosed is an apparatus for bending a hollow double structured pipe, which is simple in construction, and is capable of putting into practice easily the continuous, two- or three-dimensional bending work.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: May 12, 1998
    Assignees: Sankei Giken Kogyo Kabushiki Kaisya, Kabushiki Kaisya VISTA
    Inventor: Saburo Arai